Lock



Dec. 9, E TECH LOCK Filed March 15, 1929 2 Sheets-Sheet 1 INVENTOR T E.L.TEICH g ATTQRNEY$ Pateaed Dec. 9, 1930 UNITED STATES PATENT OFFICE ERNEST L. TEIGE, OF NEW BRITAIN, CONNECTICUT, ASSIGNOB TO THE AIEBICAN HABIQWABE CORPORATION, OF NEW BRITAIN, OONNECTIGUTJA CORPORATION 01 CONNECTICUT LOCK Application filed larch 15,

My. invention relates to looks, and has special reference to locks in which pin tumbler or other lock mechanism is located in one or both of the knobs of the lock.

Heretofore it has been common practice to secure one or both knobs of the lock by means of keeper plates which extend into annular grooves in the inner end portions of the knob shanks and are held in place by cotter pins orsimilar means. Such keeper plates and their securing means, however, are not accessible when the lock is installed so that in order to change one or both knobs .of the lock it is necessary to remove the look from the door. The necessit for removin the knob and shank of a 100 arises especiafiy in connection with locks of the type inwhich the lock mechanism is located in the knob oi the look. If for instance a tenant loses his key or believes that a key has fallen into unauth-' orized hands, it becomes desirable to change the lock mechanism which in the case of socalled knob locks may be done by substituting another knob and shank having a different look mechanism.

One of the objects of the present inventionv is to provide means for securing theknob and shank which is capable of being released while the lock is installed in the door, it thus being unnecessary to remove the lock from the door in order to remove the knob and shank.

Another object of the invention is to pro vide a novel and improved lock having its in tumbler or other lock mechanism mounte in the knob thereof.

A further object of the invention is to provide securing means for the knob and shank which is capable of being released only when 46 the door to which the lock is attached is in open position. I

A still further object of the invention is to provide securing and releasing means for the knob and shank which is controlled by an auxiliary iock mechanism so that the knob 1988. Serial I0. 847,831.

Fig. 3 is a sectional plan view taken on the.

line 33 of Fig. 2; I

Fig. 4 is a view corresponding substantially to Fig. 3 but unlike the preceding figures shows securing and releasing means for the shanks of both of the knobs of the lock; and

Fig. 5 is a face view of the lock.

My improved lock as illustrated in the drawings is of the type of the one illustrated and described in the patent to August Arens, No. 1,057,795dated April 1, 1913. As shown this look is provided with a frame 2 having a'face plate 4 and side plates or escutcheons (Sand 8 secured to the frame. The lock is furtherprovidedwith an outside knob 10 having a shank 12, and an inside knob 14 having a shank 16 r (Fig. 8), the shanks being arranged in axial alinement and being mounted to turn in bearings 18 integral with frame 2. Que or both of the knobs has a pin tumbler lock mechanism (not shown) mounted therein- Where only one such mechanism is employed it is of course usually mounted in the outer knob.

The inner ends of the knob shanks operate roll-backs 20 which are adapted to act on a yoke 22 to retract a latch bolt 24 pivotally mounted in an openin in the face plate 4, the latch-bolt being progected by means of a spring 26 coiled about a portion of the yoke.

A roll-back 28 is secured on the inner end of a rod 30 which has its other end connected with the key-operated plug of the pin tumbler mechanism in the outer knob so that upon turning the plug the latch-bolt may be retracte The outer knob may be dead-locked by means of a in 32 (Fig. 3) which is adapted to be move into and out of an aperture in the shank ofthe outer knob. This pin is secured on the inner end of a carrier bar 34 having its outer end pivotally connected with one end of a walking beam 36 ivoted on a pin 37 in an openin in the ace plate 4. Upon moving the wa king beam in opposite directions, by pressing on opposite ends thereof, the dead-locking pm ma be projected and retracted. The pin is yiel ingly held in the- )osition moved by means of a leaf spring 38 having its free end bent to engage op osite sides of a projection 40 on the carrier ar.

The lock is also provided with an actuator 42 and suitable connections for preventing retraction of the latch-bolt by insertion of an implement between it and the striker-plate on the door case. Also, suitable means is provided for preventing the dead-lock from bein released when thedoor is locked.

The shanks of the inner and outer knobs are respectively secured by keeper-plates 44 and 46 that project into annular rooves in said shanks. In Figs. 1, 2 and 3 t e keeperplate 44 for the inner knob shank is held in place by means comprising an abutment strip 48 and a cotter pin 49.

Except as hereinafter described, the parts 'above referred to may be and preferably are substantially the same as the corresponding parts of the lock of said patent to August Arens, No. 1,057,? 95, to which reference may be had for a more complete description of the same. i

In accordance with 'my invention, the

kee er-plate 46 for the outer knob is arran d in ront of the shank and mounted to s 1de horizontally on the side of the frame 2. into and out of the annular groove in the shank. The plate is su ported and guided by means of a screw 50 w ich extends through a slot in the plate, and the inner or rear end of the plate extends through a guidin slot in the sleeve 18 that surrounds the s a-nk. This keeper-plate, is held in the positions moved by means of a spring 52 having one end secured to the side of the frame 2, and its other end bent so as to permit it to snap into suitably positioned notches 54 on the under edge of the plate. I

The keeper-plate is adapted to be thus moved by means of a bar 56 having a depending end which extends downwardly into a slot 58 in the upper edge of the keeper-plate. This bar 56 is secured to the dead-lock carrier bar 34 by means of screws 59. The slot 58 is of suitable length so that duringthe normal actuation of the carrier bar to move the dead locking pin 32 into and out of deadlocking position, the keeper-plate is unafiected. When it is desired, however, to retract the keeper-plate to permit removal of the outer knob and shank the walking-beam 36 is moved a suflicient distance in a direction to retract the dead locking pin 32 to cause the depending end of the actuating bar 56 to engage the forward end wall of the slot 58 in the keeper-plate and retract the plate from theknob shank. In order, however, that the dead-locking pin 32 may be retracted without moving the keeper-plate 46, means is provided for normally limiting the movement of the" walking-beam in a direction to retract said pin, such means being adapted to be controlled when the door is open to permit movement of the walking-beam a sufficient distance to also retract the keeperplate. In the illustrated construction the means for thus normally limiting the retracting movement of the walking-beam is controlled by an auxiliary pin tumbler lock mechanism. As shown, this lock mechanism is mounted in the walking beam and comprises a key-operated plug 60 having an abutment'collar 62 secured on the inner end thereof, the key for operating the plug being indicated at 61. Normally this abutment collar, upon tilting the walking-beam 36 to retract the dead-locking pin, strikes against an abutment shoulder 64 on the lock frame 2 and thus prevents the walking-beam from being tilted a sufiicient distance to retract the keeper-plate. The abutment collar 62, however, has a chamfered off portion 66, and when it is desired to retract the keeper-plate, the key operated plug is turned a distance of ninety degrees which positions the chamfered portion 66 opposite the abutment shoulden 64 so as to permit the abutment collar 62 to clearthe abutment shoulder, thus permitting theflwalking beam to be tilted a sufficient distance to retract the keeper-plate. When the knob and shank have been removed and another substituted, the walking-beam may be tilted in the opposite direction to dead-lock the shank and to project the keeper-plate into holding engagement with the shank, whereupon the key-operated plug may be turned to return the abutment cqllar to its normalor effective position;

From the foregoing it will be apparent that means is provided for releasing one of the knobs and its shank from the lock without removing the look from the door. Also, such releasing means can only be operated when the door is open and after the keyoperated plug of the auxiliary lock mechanism has been turned to position the portion. 66 of the abutment collar opposite the abutment shoulder 64. When a new knob and shank has been substituted, the keeper-plate trollable means for may be projected and the parts restored to their initial positions.

In Fig. 4 of the drawings the carrier bar, in addition to the dead-locking pin 32 for the shank of the outer knob,-is provided with a locking pin 68 for the shank of the inner may be dead-locked. Also, a keeper-plate 70, for the shank of the inner knob, is mounted on the inner side of the frame 2. This keeperplate is operated by means of an arm 72 projecting from the inner'end of the carrier bar 34 and extending through a slot 74 in the keeper-plate. It will be apparent that with this construction the two keeper-plates may be projected and retracted simultaneously into and out of holding engagement with the shanks of both knobs.

As will be evident to those skilled in the art, my invention permits various modifications without departing from the spirit thereof or the scope of the appended claims.

What I claim is:

l. A lock having, in combination, a face plate, a knob having a shank, a. member in engagement with said shank for holding the shank from outward movement but permitting turning movement thereof and adapted to be retracted to permit removal of the knob and shank, and means accessible through said face plate for moving said member into and out of such holding engagement with said knob shank and for retaining said member in the position thus moved.

2. A look having, in combination, a frame, a knob having a shank, a member in engagement with said shank for holding the shank from outward movement but permitting turning movement thereof and adapted to be retracted from said frame to permit the knob and shank to be removed, and key-conthus retracting said member.

3. A lock having, in combination, a face plate ha ing an opening, a walking-beam mounted in said opening, a knob having a shank, a member in engagement with said shank for holding said shank from outward movement but permitting turning movement thereof and adapted to be moved out of engagement with said shank to permit removal of the knob and shank, and connections between said member and said walking-beam for moving said member into and out of engagement with said shank upon said walking-beam being moved in opposite directions, respectively.

4. A lock having, in combination, a face plate, a walking beam mounted in the face plate, a knob having a shank, a member in engagement with said shank for holding the shank from outward-movement but permitting turning movement thereof and adapted to be retracted to permit removal of the knob and shank, connections between said member knob so that the shanks of both knobsand said walking-beam for thus retracting said member upon movement of said walking-beam in one direction a predetermined number of degrees, means for limiting the movement of said walking-beam in said direction to less than said predetermined number of degrees, and a key-controllable device accessible through said face plate for rendering said means ineffective to thus limit the movement of said walking-beam.

5. A lock having, in combination, a face plate having an opening, a knob having a shank, a member in engagement with said shank for holding the shank from outward movement but permitting turning movementthereof and adapted to be retracted to permit removal of the knob and shank, a walking-beam mounted in said opening, connection between said walking-beam and said member for thus retractingsaid member upon movement of the walking-beam in one direction a predetermined number of degrees, means comprising a stop carried by said walking-beam serving when in one position to limit the movement thereof in said direction to less than said predetermined number of degrees and adapted to be moved out of said position to render it ineffective to thus limit said movement of the walkingbeam, and key controllable pin tumbler lock mechanism carried by said walking-beam for effecting said movement of the stop.

6. A lock having, in combination, a face plate having an opening, a knob having a shank, a member in engagement with said shank for holding the shank from outward movement but permitting turning movement thereof and adapted to be retracted to permit removal of the knob and shank, a walkingbeam mounted in said opening, connection between said walking-beam and said member for thus retracting said member upon movement of the walk' -beam in one direction a predetermined num er of degrees, a key-controlled pin tumbler lock mechanism having a key-operated plug adapted to be turned into and out of a predetermined angular position, and an abutment carried by said plug and a fixed abutment serving when the plug is in said predetermined position to limit the movement of the walking-beam to less than said predetermined number of degrees and when the plug is turned to another position being inefi'ective to thus limit the movement of the walking-beama 7. A lock having, in combination, a face plate, knobs having their shanks in axial alinement, a member in engagement with each of said shanks for holding the shank from outward movement but permitting turning,-

movement thereof and adapted to be re-';

tracted to permit removal of the shank and associated knob, and means accessible through said face plate for respectively moving said members into and out of holding engagement with said shanks.

8. A look for a door having, in combination, knobs having their shanks in axial alinement, a member in engagement with each of said shanks for holding the shanks from outward movement but permitting turning vement thereof and adapted to be ret cted to permit removal of the shank and associated knob, and means for simultaneously moving said members into and out of holding engagement with said shanks without removing the lock from the door.

In testimony whereof, I have si ed my name to this specification this nint day of March, 1929.

ERNEST L. TEICH. 

